Part # 11510311-1998-2013 C5/C6 Level 3 CoilOver System Front Components: 11513111 Front Coilovers Recommended Tools Rear Components: 11516111 Rear Coilover Miscellaneous Components: 85000000 Spanner Wrench 1998-2013 C5/C6 Level 3 Coilover Installation Table of contents Pages 2-6... Front TQ Series CoilOvers Pages 7-11...Rear TQ Series CoilOvers Pages 12-14...Coilover Preload and Adjustment
Part # 11513110-1998-2013 C5/C6 HQ Front CoilOvers Recommended Tools 1998-2013 C5/C6 HQ Series Front CoilOvers Installation Table of contents Page 2... Included components Page 3... Getting Started and Disassembly Page 4... CoilOver Assembly Page 5... CoilOver Installation Page 6... CoilSpring Adjusting Page 7... Shock Adjustment This kit is Designed to replace the Factory Shocks and Traverse Leaf Spring Setup 2
Major Components...In the box Item # Part # Description QTY 1 24149999 4.1 Stroke HQ Series Shock 2 2 90002060 Wide Trunnion 2 3 90001980 Trunnion Snap Ring 4 4 59080425 Coilspring 8 425lb 2 5 70010828 Delrin Spring Washer 4 6 90002222(kit) Lower Spring Adjuster Nut (90002222 kit) 2 7 90002222(kit) Adjuster Nut Locking Screw (90002222 kit) 2 8 90002070 Upper CoilSpring Retaining Plate 2 9 90002222(kit) CoilSpring Plate Retaining Ring 2 10 90009989(kit) 2.75 Stud Adjuster Assembly 2 11 90002313 2.75 Stud Top Base 2 12 90001904 Delrin Ball Lower Half 2 13 90001903 Delrin Ball Top Half 2 14 90001902 Delrin Ball Upper Cap 2 15 99562003 9/16-18 Nylok Nut 2 16 90009989(kit) Shock Adjuster Knob 2 17 90009989(kit) Adjuster Knob Retaining Screw 2 90001994 5/8 ID Bearing (installed in shock body) 2 90001995 Bearing Snap Ring (installed in shock body) 4 17 16 15 14 13 12 11 9 10 8 5 5 6 7 2 3 1 3 3
Getting Started and Disassembly Congratulations on your purchase of the Ridetech C5/C6 CoilOver System. This system has been designed to give your Corvette excellent handling along with a lifetime of enjoyment. The CoilOver System provides flexibility that can not be achieved with Leaf Springs. The CoilOver System will give you the flexibility of adjusting your ride height along with numerous spring options to dial in your ride quality to your personal preference. This CoilOver System is Designed to replace the factory Shock and Leaf Springs. 1. The front OEM Shocks and Leaf Spring will need to be removed from the front of the car. 2. Raise the vehicle and support it by the frame allowing the suspension to hang freely. 3. Remove the shocks from both sides retaining the hardware. 4. Unbolt the brake caliper from the drives side and hang it on the frame using a zip tie or piece of wire (DO NOT LET IT HANG BY THE BRAKE HOSE). 5. Place a jack under the Driver lower control arm to support it. Unbolt the upper control arm from the frame by removing the (4) bolts attaching it. IF THERE ARE ANY SHIMS BEHIND THE UPPER CONTROL ARM TRUNNION, MARK THEM SO THAT YOU CAN PUT THEM BACK IN THE SAME POSITION WHEN REASSEMBLING. 6. Remove the (4) bolts that attach the Leaf Spring to the car. 7. Slide the spring out the Drivers side of the car. It will be necessary to lower the driver control arm using the jack that it is supporting it to get the spring out of the car. 8. Reattach the upper Control Arm putting any shims that were installed back in their correct position. 9. With the Shocks and Leaf Springs removed and the upper Control Arm and Caliper reattached you are ready to start assembling the CoilOvers and instal them in your Corvette. To get Started refer to the page 4 on how to assemble the CoilOver 4.com
10. CoilOver Assembly 10 9 8 7 5 6 2 1 10. To Assemble the CoilOver you need to: a. Remove Screw (2) from center of Adjustment Knob (1) and remove Adjustment Knob. b. Remove Nylok Nut, Delrin Upper Cap, Delrin Upper and Lower Balls, along with the base from the Coliover stud. c. Thread Adjuster Nut (3) onto the CoilOver body. Once it is threaded on the shock body, lightly thread in the locking screw (4) into the Adjuster Nut. d. Install a Delrin Spring Washer (5) onto the Adjuster Nut. e. Slide the CoilSpring (6) onto the CoilOver. f. Install another Delrin Spring Washer (5) on top of the CoilSpring. g. Install the Upper CoilSpring Plate (7) onto the CoilSpring. h. Install the CoilSpring Retaining Ring (8) onto the Stud Top Base (9). It fits into the groove in the base. i. Slide the Stud Top Base onto the shock until it bottoms out on the stud. It may be necessary to thread the Adjuster Nut down the shock body (to lower the spring) if the base will not slide all the way down onto the stud. k. Slide the Lower Delrin Ball (10) (it has the collar sticking up around the center hole) on to the Stud Top. 3 4 Repeat on second CoilOver. 5.com
11. CoilOver Installation 6 5 4 3 2 FRAME 11. With the CoilOver(1) assembled, it is time to bolt them into the car. Insert to CoilOver Stud Top through the factory hole in the frame. Install the Upper Delrin Ball(2) onto the shock stud with the flat side facing the frame. Next, Install the Delrin Ball cap (3) onto the shock stud with the Concave side facing the Upper Delrin ball. Install the Nylok Nut(3) onto the shock stud and lightly tighten. The needs to be some resistance on the ball but not tight enough that it will not rotate freely. Reinstall the adjuster knob(5) using the screw (6) that was removed during step 10. 1 12. 12. Attach the CoilOver Trunnion to the OEM Control arm using the OEM hardware. Tighten the lower Coilspring Adjusting nut until the Coilspring is sitting snuggly on the CoilOver. Using the Spanner wrench add another 1/2 of preload in the spring by threading the adjuster nut up the Shock Body. Be sure that the locking screw is lightly tightened in the adjuster nut. Once you have preloaded tighten the locking screw. It may be necessary to add more preload, this will be determined once the car is setting on the ground. 6.com
Part # 11516111-1998-2013 C5/C6 TQ Rear CoilOvers Recommended Tools 1998-2013 C5/C6 TQ Series Rear CoilOvers Installation Table of contents Page 7... Included components Page 8... Hardware List and Getting Started Page 9... CoilOver Assembly and Installation Page10... Upper Mount Assembly and Installation Page11... CoilSpring and Shock Adjustment Page12&13... Shock Adjustment
Major Components...In the box Item # Part # Description QTY 1 24639999 3.6 Stroke HQ Series Shock 2 2 70011446 Lower Shock Mount (Attached to Shock) 2 3 90002397 Adapter Puck (Attached to Shock) 2 4 90002636 Adapter Ring (Attached to Shock) 2 5 70010828 Delrin Spring Washer 4 6 90002222(kit) Lower Spring Adjuster Nut (90002222 kit) 2 7 90002222(kit) Adjuster Nut Locking Screw (90002222 kit) 2 8 90002222(kit) Upper CoilSpring Retaining Plate 2 9 90002222(kit) CoilSpring Plate Retaining Ring 2 10 90002024 Upper Shock Eyelet 2 11 90002043 Upper Eyelet Bearing Spacers 2 12 90002584 Upper Shock Mount Assembly - Driver 1 12 90002585 Upper Shock Mount Assembly - Passenger 1 90001994 5/8 ID Bearing (installed in shock eyelet) 2 90001995 Bearing Snap Ring (installed in shock eyelet) 4 90002221 Reservoir Clamps (Not Shown) 4 99050000 Reservoir Socket Head Cap Screws (Not Shown) 12 59070550 7 550lb CoilSpring 2 11 17 8 5 1 5 6 7 4 2 13 12 10 3 14 15 11 16 9 8
Hardware List...In the box QTY Part Number Description 2 99501042 1/2:-13 x 1 Button Head Lower Shock Mount to Shock (13) 2 99503006 1/2 SAE Flatwasher Lower Shock Mount to Shock (14) 2 99503008 1/2 Split Lock Washer Lower Shock Mount to Shock (15) 2 99501041 1/2-20 x 2 Hex Bolt Upper Shock To Mount (16) 2 99502016 1/2-20 Nylok Nut Upper Shock to Mount (17) Getting Started... Congratulations on your purchase of the Ridetech C5/C6 CoilOver System. This system has been designed to give your Corvette excellent handling along with a lifetime of enjoyment. The CoilOver System provides flexibility that can not be achieved with Leaf Springs. The CoilOver System will give you the flexibility of adjusting your ride height along with numerous spring options to dial in your ride quality to your personal preference. This CoilOver System is Designed to replace the factory Shock and Leaf Springs. 1. The front OEM Shocks and Leaf Spring will need to be removed from the front of the car. 2. Raise the vehicle and support it by the frame or rear crossmember allowing the suspension to hang freely. 3. Remove the shocks from both sides retaining the hardware. 4. Relieve all the tension on the springs. Place a 21 mm wrench on the top nut on one of the spring adjuster bolts, and then use an 18mm socket wrench on the head of the bolt to loosen it. Do this step on both sides. 5. With the tension relieved from the spring, remove the (4) bolts that hold the spring retaining straps and remove the spring from the car 6. With the Shocks and Leaf Springs removed you are ready to start assembling the CoilOvers and install them in your Corvette. To get Started refer to the page 4 on how to assemble the CoilOver 9
CoilOver Assembly... Assembly First using the supplied lower adjuster nut(90002222) thread the nut onto the shock from the top side as seen in figure 1 Slide the Derlin washer over the spring, Next slide the upper spring mount (90002222) over eyelet as seen in figure 4. 1 4 2 3 Next install delrin washers then coil spring over the top of the shock as seen in figure 2 Before the upper spring mount can be installed screw the adjuster knob on the upper eye mount to the firmest setting (clockwise) as seen in figure 3. and remove knob. 5 Install upper spring mount retainer clip (90002057) into the groove on the upper eyelet as seen in figure 5. Then reinstall adjuster to complete assembly. CoilOver Installation 7. TOP VIEW 7. New Upper Mounts are included to replace the OEM mounts. The Upper Mount will be replaced with mounts included in the Shock Kit. When these mounts are installed correctly, the Upper Mounting Bolt will be PARALLEL with the Lower Mounting Bolt. DRIVER PASSENGER 10
Upper Mount Fitting and Installation 8. 8. Insert the 1/2 x 2 Bolt through the holes in the tabs of the Upper Mount. Test fit the Upper Mount to see if any clearancing is necessary. The Mount needs to sit tight against the OEM shock mount with the mounting holes aligned. You may have to clearance the hole for the bolt to fit through it. 9. 9. Clearance the hole if the Mount doesn t sit correctly. 10. 3 1 1 4 2 10. With the CoilOver assembled insert the upper spacers(1) into the upper shock bearings. With the spacers installed insert the CoilOver assembly into the upper shock mount(2). Align the holes in the bracket with the hole in the Shock spacers and insert the 1/2 Bolt(3) and secure with the 1/2 Nylok Nut(4). Once the Mounts are assembled on the CoilOvers, install the assembly into the car making sure they are on the correct sides. The attaching bolt should run front parallel with the lower shock mount. 11.com
11. Attaching Assembly... Lower CoilSpring Assembly... Adjusting 11. Attach the lower CoilOver mount to the OEM Shock Mount on the Lower Control Arm using the factory hardware. It may be necessary to raise the lower control arm up to align the CoilOver with the OEM Mount. Tighten the lower Coilspring Adjusting nut until the Coilspring is sitting snuggly on the CoilOver. Using the Spanner wrench add another 1/2 of preload in the spring by threading the adjuster nut up the Shock Body. Be sure that the locking screw is lightly tightened in the adjuster nut. Once you have preloaded tighten the locking screw. It may be necessary to add more preload, this will be determined once the car is setting on the ground. Ride Height We have designed most cars to have a ride height of about 1 1/2 lower than factory. To achieve the best ride quality & handling, the shock absorber needs to be at 40-60% overall travel when the car is at ride height. This will ensure that the shock will not bottom out or top out over even the largest bumps. Measuring the shock can be difficult, especially on some front suspensions. Measuring overall wheel travel is just as effective and can be much easier. Most cars will have 4-6 of overall wheel travel. One easy way to determine where you are at in wheel travel is to take a measurement from the fender lip (center of the wheel) to the ground. Then lift the car by the frame until the wheel is just touching the ground, re-measure. This will indicate how far you are from full extension of the shock. A minimum of 1.5 of extension travel (at the wheel) is needed to ensure that the shock does not top out. If you are more than 3 from full extension of the shock then you are in danger of bottoming out the shock absorber. Adjusting Spring Height When assembling the CoilOver, screw the spring retainer tight up to the spring (0 preload). After entire weight of car is on the wheels, jounce the suspension and roll the car forward and backward to alleviate suspension bind. spring retainer down would lower the car, this could allow the spring to fall out of its seat when lifting the car by the frame. up to achieve ride height. On 2.6-4 stroke shocks, up to 1.5 of preload is acceptable. On 5-7 stroke shocks, up to 2.5 of preload is acceptable. If more preload is needed to achieve ride height a stiffer spring rate is required. Too much preload may lead to coil bind, causing ride quality to suffer. 12
Shock adjustment 101- Single Adjustable Rebound Adjustment: How to adjust your new shocks. The rebound adjustment knob is located on the top of the shock absorber protruding from the eyelet. You must first begin at the ZERO setting, then set the shock to a soft setting of 20. Take the vehicle for a test drive. -Begin with the shocks adjusted to the ZERO rebound position (full stiff). Do this by rotating the rebound adjuster knob clockwise until it stops. -Now turn the rebound adjuster knob counter clock wise 20 clicks. This sets the shock at 20. (settings 21-24 are typically too soft for street use). -if you are satisfied with the ride quality, do not do anything, you are set! -if the ride quality is too soft increase the damping effect by rotating the rebound knob clock wise 3 clicks. CONTINUE ON NEXT PAGE. Take the vehicle for another test drive. -if the vehicle is too soft increase the damping effect by rotating the rebound knob clock wise 3 additional clicks. -If the vehicle is too stiff rotate the rebound adjustment knob counter clock wise 2 clicks and you are set! Take the vehicle for another test drive and repeat the above steps until the ride quality is satisfactory. Note: One end of the vehicle will likely reach the desired setting before the other end. If this happens stop adjusting the satisfied end and keep adjusting the unsatisfied end until the overall ride quality is satisfactory. Shock adjustment 101- Triple Adjustable Triple Adjustable: Step One: High Speed Compression -High speed compression adjustments are used in both street driving and track tuning. -Begin with the shocks adjusted to the ZERO high speed compression position (full stiff). Do this by rotating the high speed compression adjuster (large knob) clockwise until it stops. -Now turn the high speed compression adjuster knob counter clock wise 20 clicks. This sets the shock at 20. (settings 21-24 are typically too soft for street use. For typical street driving the high speed compression adjuster will remain at setting 20. 13.com
Shock Assembly... Adjustment Step Two: Low Speed Compression Low speed compression adjustment is what is typically felt during street driving. Take the vehicle for another test drive. -Begin with the shocks adjusted to the ZERO low speed compression position (full stiff). Do this by rotating the low speed compression adjuster (small knob) clockwise until it stops. -Now turn the low speed compression adjuster knob counter clock wise 20 clicks. This sets the shock at 20. (settings 21-24 are typically too soft for street use). Take the vehicle for a test drive. -if you are satisfied with the ride quality, do not do anything, you are set! -if the ride quality is too soft increase the damping effect by rotating the low speed compression knob clock wise 3 clicks. -if the vehicle is too soft increase the damping effect by rotating the low speed compression knob clock wise 3 additional clicks. -If the vehicle is too stiff rotate the low speed compression adjustment knob counter clock wise 2 clicks and you are set! Take the vehicle for another test drive and repeat the above steps until the ride quality is satisfactory. Step 3: Adjust rebound according to Single Adjustable instructions. Note: One end of the vehicle will likely reach the desired setting before the other end. If this happens stop adjusting the satisfied end and keep adjusting the unsatisfied end until the overall ride quality is satisfactory. STILL HAVE QUESTIONS? Tech line hours Monday - Friday 8AM - 6PM (EST)... 14